viscous (adj.)

• adhesive
• amylaceous
• bulky
• bullnecked
• clammy
• close
• close-knit
• clotted
• coagulated
• coarse
• compact
• compressed
• concentrated
• concrete
• congested
• consolidated
• corpulent
• crass
• crowded
• curdled
• dense
• doughy
• fat
• firm
• full
• full-bodied
• gelatinous
• gluey
• glutinous
• gooey
• gross
• grumous
• gummy
• hard
• heavy
• heavyset
• impenetrable
• impermeable
• jam-packed
• jammed
• jelled
• jellied
• jellylike
• massive
• mucilaginous
• nonporous
• packed
• pasty
• ropy
• serried
• slimy
• slithery
• solid
• starchy
• sticky
• stiff
• stodgy
• stringy
• substantial
• syrupy
• tacky
• tenacious
• thick
• thick-bodied
• thickened
• thickset
• three-dimensional
• tough
• viscid